Transmission Overview
The Electronically Controlled Continuously Variable Transmission (eCVT) has the following internal components
- Traction Motor
- Generator/Starter
- High voltage terminals
- Pump and filter assembly
- Transmission fluid auxiliary pump
- TR sensor
- TFT sensor
- Planetary carrier
- Differential carrier
When the transmission range is in the park position the park pawl locks the final drive to the transmission case and the vehicle cannot be moved. The vehicle can be turned on and the ready indicator light illuminates to indicate the selector lever can be moved out of park and the vehicle can be driven.
When the transmission range is in the reverse position, the TCM changes the polarity of the field coil which reverses the electric motor to move the vehicle in reverse.
When the transmission range is in the neutral position, the electric motor does not provide power to or hold the final drive and the final drive can spin freely.
When the transmission range is in the drive position, the TCM provides high voltage current to the electric motor to transfer torque to the final drive.
When the transmission range is in the low position, the transmission increases regenerative braking when the accelerator pedal is released to provide an engine braking feeling and increased battery charging.
Scheme 1
Scheme 2
| Item | Description |
|---|---|
| 1 | Transmission identification tag |
| 2 | Transmission strategy tag |
Scheme 3
| Item | Description |
|---|---|
| 1 | Transmission part number |
| 2 | Bar code 1 |
| 3 | Assembly plant line shift |
| 4 | Transmission build date (DDMMYY) |
| 5 | Transmission serial number |
| 6 | Bar code 2 |
Scheme 4
| Item | Description |
|---|---|
| 1 | 13 digit transmission strategy |
| 2 | 11 digit transmission identification |
Scheme 5
Diagnostic Overview
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to TRANSMISSION CONTROLS for schematic and connector information.
Normal Operation and Fault Conditions
The TR sensor monitors the position of the manual control lever shaft. The TR sensor is mounted on the transmission. The TR sensor allows the vehicle to start in park and neutral positions. The TR sensor output signal is linear over the measurement range and the PCM receives this signal verifying the selector lever position.
The TR sensor input is used for selector lever position, starter inhibit relay and reversing lamps.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P2800:00 | Transmission Range Sensor "B" Circuit (PRNDL Input) | The PCM indicated an invalid voltage input indicating an invalid gear position. |
| P2801:00 | Transmission Range Sensor "B" Circuit Range/Performance | The PCM indicated a TR sensor "B" duty cycle is out of range. |
| P2802:00 | Transmission Range Sensor "B" Circuit Low | The PCM indicated a TR sensor "B" duty cycle input is low. |
| P2803:00 | Transmission Range Sensor "B" Circuit High | The PCM indicated a TR sensor "B" duty cycle input is high. |
| P2806:00 | Transmission Range Sensor Alignment | The PCM indicated the TR sensor is in between gears for too long. |
| P2806:79 | Transmission Range Sensor Alignment | The SOBDMC/ TCM indicated vehicle movement when the TR sensor indicates park. |
DTC DESCRIPTION
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to TRANSMISSION CONTROLS for schematic and connector information.
The TFT sensor is located on the internal transmission harness. The resistance value of the TFT sensor varies with temperature change. The SOBDMC monitors the voltage drop across the TFT sensor to determine transmission fluid temperature.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0710:11 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor voltage failed low. Indicated temperature was greater than 643.5°F (340°C) for 2.5 seconds. Signal circuit short to ground. |
| P0710:15 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor voltage failed high. Indicated temperature was less than -39.9°F (-40°C) for 2.5 seconds. Signal circuit open or short to power. |
| P0710:62 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor 5 volt reference signal is good but the TFT sensor indicates a significant difference from the other two sensors in the transmission. |
| P0711 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor 5 volt reference signal is good but the TFT sensor indicates a significant difference from the other two sensors in the transmission. |
| P0712 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor voltage failed low. Indicated temperature was greater than 643.5°F (340°C) for 2.5 seconds. Signal circuit short to ground. |
| P0713 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor voltage failed high. Indicated temperature was less than -39.9°F (-40°C) for 2.5 seconds. Signal circuit open or short to power. |
DTC DESCRIPTION
Note. P0710:62 can only be set if the vehicle is powered OFF for at least 4 hours. If P0710:62 is cleared, it can not be detected unless the transmission remains off for 4 hours. The condition that set the code can still be present even if the code does not immediately return after it is erased.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to TRANSMISSION CONTROLS for schematic and connector information.
The TR sensor monitors the position of the manual control lever shaft. The TR sensor is mounted on the transmission. The TR sensor allows the vehicle to start in park and neutral positions. The TR sensor output signal is linear over the measurement range and the PCM receives this signal verifying the selector lever position.
The TR sensor input is used for selector lever position, starter inhibit relay and reversing lamps.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P2800:00 | Transmission Range Sensor "B" Circuit (PRNDL Input) | The PCM indicated an invalid voltage input indicating an invalid gear position. |
| P2801:00 | Transmission Range Sensor "B" Circuit Range/Performance | The PCM indicated a TR sensor "B" duty cycle is out of range. |
| P2802:00 | Transmission Range Sensor "B" Circuit Low | The PCM indicated a TR sensor "B" duty cycle input is low. |
| P2803:00 | Transmission Range Sensor "B" Circuit High | The PCM indicated a TR sensor "B" duty cycle input is high. |
| P2806:00 | Transmission Range Sensor Alignment | The PCM indicated the TR sensor is in between gears for too long. |
| P2806:79 | Transmission Range Sensor Alignment | The SOBDMC/ TCM indicated vehicle movement when the TR sensor indicates park. |
DTC DESCRIPTION
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to TRANSMISSION CONTROLS for schematic and connector information.
The TFT sensor is located on the internal transmission harness. The resistance value of the TFT sensor varies with temperature change. The SOBDMC/ TCM monitors the voltage drop across the TFT sensor to determine transmission fluid temperature.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0710:11 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor voltage failed low. Indicated temperature was greater than 643.5°F (340°C) for 2.5 seconds. Signal circuit short to ground. |
| P0710:15 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor voltage failed high. Indicated temperature was less than -39.9°F (-40°C) for 2.5 seconds. Signal circuit open or short to power. |
| P0710:62 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor 5 volt reference signal is good but the TFT sensor indicates a significant difference from the other two sensors in the transmission. |
| P0711 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor 5 volt reference signal is good but the TFT sensor indicates a significant difference from the other two sensors in the transmission. |
| P0712 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor voltage failed low. Indicated temperature was greater than 643.5°F (340°C) for 2.5 seconds. Signal circuit short to ground. |
| P0713 | Transmission Fluid Temperature Sensor "A" Circuit | The TFT sensor voltage failed high. Indicated temperature was less than -39.9°F (-40°C) for 2.5 seconds. Signal circuit open or short to power. |
DTC DESCRIPTION
Note. P0710:62 can only be set if the vehicle is powered OFF for at least 4 hours. If P0710:62 is cleared, it can not be detected unless the transmission remains off for 4 hours. The condition that set the code can still be present even if the code does not immediately return after it is erased.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: DIAGNOSTIC METHODS .
Refer to TRANSMISSION CONTROLS for schematic and connector information.
The electronic transmission fluid auxiliary pump is used to keep the transmission fluid circulating during extended drive times without engine charging. The electronic transmission fluid auxiliary pump has an internal microprocessor and communicates with the SOBDMC/ TCM over a PWM circuit with a frequency of 150 Hz with a duty cycle range of 10% to 90%.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0C27:00 | Electric Transmission Fluid Pump Motor Current Low | This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but a low current is detected (10% to 15% duty cycle). |
| P0C28:00 | Electric Transmission Fluid Pump Motor Current High | This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but a low current is detected (20% to 25% duty cycle). |
| P0C2A:00 | Electric Transmission Fluid Pump Motor Stalled | This DTC sets if the E-pump communication is OK. The frequency is between 150 Hz and 210 Hz but an over temperature condition is detected (35% to 40% duty cycle). |
| P0C2C:00 | Electric Transmission Fluid Pump Control Module Feedback Signal Range/Performance | This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but the duty cycle does not match one of the defined duty cycle ranges. |
| P0C2D:00 | Electric Transmission Fluid Pump Control Module Feedback Signal Low | This DTC sets if the duty cycle is less than 10%. |
| P0C2E:00 | Electric Transmission Fluid Pump Control Module Feedback Signal High | This DTC sets if the duty cycle is greater than 90%. |
| P175A:00 | Transmission Fluid Over Temperature Condition - Electric Transmission Fluid Pump Disabled | This DTC sets if the E-pump communication is OK. The frequency is between 130 Hz and 170 Hz but an over temperature condition is detected (30% to 34% duty cycle). |
| P2796:00 | Electric Transmission Fluid Pump Control Circuit | This DTC sets when the E-pump is not receiving a signal on it's PWM input signal from the SOBDMC /TCM. |
DTC DESCRIPTION